Electric vehicle is a very convenient means of transportation for our daily travel. It is essential to charge the electric vehicle every day. Do you know how the battery in the electric vehicle stores electricity and energy? In fact, in the electric vehicle battery in parallel after the electrolytic capacitor can be stored.
电解电容的作用是：滤波、退耦、储能、隔直流通交流等。在不同电路中有着不同的用途。不同的用途电容材料与容量的选择也是不同的。
The function of electrolytic capacitor is: filtering, decoupling, energy storage, isolated direct current exchange, etc. It has different uses in different circuits. The choice of capacitance material and capacity is different for different purposes.
没有发电机及时为电容充电，电容反而需要用电瓶来充电。理论上增加一个法拉电容可以提高电池放电电流，但是电动车电池放电电流已经足够用了，没有必要在增加放电电流。
There is no generator to charge the capacitor in time. Instead, the capacitor needs to be charged with a battery. Theoretically, adding a farad capacitor can increase the battery discharge current, but the electric vehicle battery discharge current is enough, there is no need to increase the discharge current.
何况电解电容都会存在漏电电流，反复的充放电，耗电量增加反而会缩短电动车续航里程。
Moreover, there will be leakage current in electrolytic capacitors. Repeated charging and discharging will lead to increased power consumption, which will shorten the driving range of electric vehicles.
即使在充电时电容可以储存一定电量，但是电动车启动后一瞬间电容内存储电量就会耗光，然后电容充放电都取自电瓶，电瓶增加了额外消耗，加装电容没有意义。
Even when charging, the capacitor can store a certain amount of electricity, but after the electric vehicle starts up, the storage capacity of the capacitor will be exhausted. Then the charge and discharge of the capacitor are taken from the battery, which increases the extra consumption of the battery, so it is meaningless to add a capacitor.
利用电容储能可以实现削峰填谷，在汽车改装中可以用到。
It can be used in automobile refitting.
例如改音响，加装大功率功放时可以用大容量电解电容。一般都装在功放附近，可以满足音响爆棚时对电流的要求，使瞬态反应更及时。这个电容就是起到了大水塘的作用，平时发电机为电容充电，电容会储存电量。
For example, when changing the sound system and installing high-power power amplifier, large capacity electrolytic capacitor can be used. Generally installed near the power amplifier, it can meet the requirements of the current when the sound burst, making the transient response more timely. This capacitor acts as a big pond. Usually, the generator charges the capacitor and the capacitor will store electricity.
发电机犹如一个小排量水泵抽水，而功放瞬间大动态时相当与一个大排量水车。所以大动态时水泵供水量就会不足，这时候电容相当于一个大水塘，功放大动态时水塘开闸放水，满足功放瞬间动态需求。
The generator is like a small displacement water pump to pump water, and the power amplifier is equivalent to a large displacement water wheel when it is in a big dynamic state. Therefore, when the power amplifier is in large dynamic state, the water supply of the pump will be insufficient. At this time, the capacitance is equivalent to a large pool. When the power amplifier is in large dynamic state, the reservoir will be opened to discharge water to meet the instantaneous dynamic demand of the power amplifier.
这个电容就相当于平时储存电量，有需要时可以全部放出来。这就是削峰填谷。而电解电容的容量也要足够大才可以，基本上都是1-2法拉（1000000-2000000μf）。
This capacitor is equivalent to the power stored at ordinary times and can be fully discharged when necessary. This is peak cutting and valley filling. The capacitance should be large enough, basically 1-2 farads (1000000-2000000 μ f).